πΏ Biochemical Cotton Filter Key Features: Material: Bio Sponge, Plastic Usage: Filtration, Oxygenation, Bacteria Cultivation Quantity: 1Pc Benefits: Sponge filters offer mechanical and biofiltration. The air infusion chamber creates minute bubbles, enhancing oxygen solubility. π Safe for fish: Soft sponge traps debris without sucking fish. π Easy setup & cleaning: Install airline, turn on air pump, rinse and squeeze sponge. π οΈ Ideal for: Up to 20 gallons tanks, perfect for small fish like betta, guppy, etc. π Suitable for hatcheries, maternity tanks, nano tanks, and fry tanks. π£ Additional Advantages: Reduces air pump noise and consumes less power. π User-friendly design with replaceable filter cotton for easy maintenance. π§Ό Increases oxygen solubility without distracting noise. π